White City to Liverpool Street and 1992 Stock available here (not compatible with BVE2/4 or Mac/Linux openBVE).
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Legacy releases
Ruislip Depot to Perivale is available here for BVE4 and openBVE. 1992 Stock legacy version also available.

Epping to Ongar v2 for BVE4 and openBVE is available here.
An older version of Epping to Ongar (and return) route for BVE2 only is available here.

Marble Arch to Holborn then Chancery Lane to Marble Arch is available here. 
(This release was a BVE2 demo and is not recommended for openBVE users).

Shepherd's Bush to Marble Arch (BVE2 demo) is here. Requires Northern line v3 objects from here. BVE2 users also need 1992 Stock from here. Also works on openBVE.